The Royal Borough's Finest Properties
Secondary Glazing in Kensington, Chelsea & Knightsbridge
Architectural-grade glazing for the Cadogan Estate and the Hans Town Conservation Area. Engineered to be invisible against the white stucco facades of Chelsea and the grand villas of Holland Park.
Book a Private Heritage Survey80% Noise Reduction
Up to 45 dB attenuation
60% Heat Retention
U-value improvement guaranteed
Grade I & II Listed Approved
Fully reversible installation
Conservation & Planning
Preserving the Historic Fabric
The Royal Borough of Kensington and Chelsea enforces some of London's strictest conservation controls, with Article 4 directions covering most residential areas. We work with RBKC's planning department, the Cadogan Estate's property management team, and the Holland Park Conservation Area advisory committee to ensure every installation meets or exceeds their requirements.
The Hans Town Conservation Area & Cadogan Estate
One of London's earliest planned estates, designed by Henry Holland in the 1770s for Hans Sloane's family. The 93-acre Cadogan Estate owns much of the residential property, and their Sloane Street office requires approved contractors for any window works. We hold Cadogan Estate approved status and have installed secondary glazing in over 40 properties across Cadogan Square, Lennox Gardens, and Pont Street. The Dutch-gable and Queen Anne revival facades demand invisible solutions. Our colour-matched aluminium frames preserve the architectural integrity of every elevation.
Key streets: Sloane Street, Cadogan Square, Cadogan Place, Pont Street, Hans Crescent, Beauchamp Place, Lennox Gardens, Cadogan Gardens, Milner Street
The Cheyne Conservation Area & Chelsea Embankment
Stretching along the Thames from Royal Hospital Road to Battersea Bridge, this is Chelsea's most historic quarter. Cheyne Walk's Queen Anne and Georgian houses -- once home to Turner, Rossetti, and George Eliot -- feature delicate Crown glass panes that cannot be replaced. Our slim-profile aluminium frames sit discreetly behind these irreplaceable originals. The Royal Hospital Conservation Area (designed by Sir Christopher Wren) and the Chelsea Physic Garden demand the highest standards of heritage sensitivity.
Key streets: Cheyne Walk, Cheyne Row, Royal Hospital Road, Tite Street, Tedworth Square, Old Church Street, Lawrence Street, Swan Walk
The Knightsbridge Conservation Area & Brompton
Centred on Brompton Road between Harrods and the V&A Museum, this area features grand Victorian and Edwardian mansion blocks. Brompton Road carries 30,000+ vehicles daily -- our acoustic systems reduce indoor levels from 78 dB to below 33 dB. The intimate Georgian squares of Montpelier and Trevor (c.1830) suffer from reflected traffic noise bouncing off the V&A's facade. Our heritage team uses colour-matched aluminium frames that satisfy both English Heritage and the local conservation officer.
Key streets: Brompton Road, Montpelier Square, Trevor Square, Hans Road, Basil Street, Walton Place, Walton Street, Beaufort Gardens
Holland Park & the Phillimore Conservation Area
The grand Victorian villas and Italianate mansions of Holland Park represent some of London's finest domestic architecture. The Phillimore Conservation Area contains the Grade I listed Holland House (Jacobean, 1605) and surrounding streets of substantial detached villas with tall bay windows. These large openings require custom-fabricated panels with counterbalanced lifting systems. We've completed installations in properties on Ilchester Place, Holland Villas Road, and Addison Road -- some with window openings exceeding 3 metres.
Key streets: Holland Park Avenue, Ilchester Place, Holland Villas Road, Addison Road, Phillimore Gardens, Campden Hill Road, Upper Phillimore Gardens
The Invisible Difference
Ultra-Slim Frames, Invisible Results
Our 24mm aluminium frames sit precisely within the window reveal, aligning with original sash meeting rails. The result is secondary glazing that nobody can see.

Chelsea bay window -- frame follows the original curved ironwork precisely

Knightsbridge mansion block, 45 dB noise reduction from Brompton Road

Holland Park villa, counterbalanced panels for 2.8m window openings
Complimentary Consultation
Experience the Silence in Your Kensington, Chelsea & Knightsbridge Property
Our heritage surveyor will visit your property, measure every window, assess the specific noise sources, and provide a detailed written specification. No obligation. No hard sell.